Unfortunately tablets with unlockable boot loaders are rarer than honest politicians.
Huawei, Honor and Redmi have decent tablets.
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Unfortunately tablets with unlockable boot loaders are rarer than honest politicians.
Huawei, Honor and Redmi have decent tablets.
Samsung Galaxy Tab S6 lite fits all your requirements except for the repairability.
https://xdaforums.com/t/rom-official-lineageos-21-for-galaxy-tab-s6-lite.4679096/